Chill tube for the continuous casting of metals

Abstract

A chill tube ( 1 ) for the continuous casting of metals has a double T-shaped cross section in beam blank format. Inner contour ( 3 ) defining the cross section of the cast billet is cooled by cooling water, which is guided through cooling channels ( 4 ) in tube wall ( 2 ). Cooling channels ( 4 ) have a round cross section when manufactured. Inner contour ( 3 ) has rounded transitions ( 6 ) between wall sections ( 9 ) bordering a flange region ( 7 ) and a crosspiece region ( 8 ). The distance (A) between two cooling channels ( 4 ) adjacent to each other in transitions ( 6 ) is smaller than distance (B) in the remaining wall sections ( 9 ).

1. A chill tube for the continuous casting of metals, comprising: a tube wall ( 2 ) having an inner contour ( 3 ) in beam blank format, the inner contour having rounded transitions ( 6 ) between wall sections ( 9 ) bordering on one side a flange region ( 7 ) and on the other side a crosspiece region ( 8 ) the inner contour ( 3 ) being able to be cooled indirectly by an externally supplied cooling medium; and cooling channels ( 4 ) provided in the tube wall ( 2 ) which extend in its longitudinal direction, wherein the distance (A) between two cooling channels ( 4 ) which are adjacent to each other in transitions ( 6 ) is smaller than the distance (B) in the remaining wall sections ( 9 ). 
   
   
     2. The chill tube according to  claim 1 , further comprising a water-guiding jacket adapted to the outer contour of the tube wall. 
   
   
     3. The chill tube according to  claim 2 , wherein the cooling channels ( 4 ) provided in the transitions extend from the upper end face ( 5 ) of the tube wall to approximately the middle height region of the tube wall. 
   
   
     4. The chill tube according to  claim 2 , wherein cooling medium supply lines and cooling medium drain lines connected to the cooling channels ( 4 ) are provided in the outer contour of the tube wall. 
   
   
     5. The chill tube according to  claim 2 , wherein the cooling channels ( 4 ) have flowing through them a cooling medium which flows between the tube wall and the water-guiding jacket. 
   
   
     6. The chill tube according to  claim 2 , wherein it has a double T-shaped cross section. 
   
   
     7. The chill tube according to  claim 1 , wherein cooling medium supply lines and cooling medium drain line connected to the cooling channels ( 4 ) are provided in the outer contour of the tube wall. 
   
   
     8. The chill tube according to  claim 7 , wherein the cooling medium supply lines and the cooling medium drain lines are provided in the middle height region of tube wall. 
   
   
     9. The chill tube according to  claim 1 , wherein the cooling channels ( 4 ) provided in the transitions extend from the upper end face ( 5 ) of the tube wall to approximately the middle height region of the tube wall. 
   
   
     10. The chill tube according to  claim 9 , wherein cooling medium supply lines and cooling medium drain lines connected to the cooling channels ( 4 ) are provided in the outer contour of the tube wall. 
   
   
     11. The chill tube according to  claim 10 , wherein the cooling medium supply lines and the cooling medium drain lines are provided in the middle height region of tube wall. 
   
   
     12. The chill tube according to  claim 1 , wherein it has a double T-shaped cross section.